Live coverage from our all-star team of writers on the calls and rules interpretations of Super Bowl LI from NRG Stadium in Houston.
A look through the photo archives of the teams and Getty Images of the Super Bowl LI officials in action.
There are three to five alternate officials assigned and ready to go into a playoff game should an on-field official get hurt or sick.
For the second year in a row, the replay reversal rate among head coaches has climbed.
A study purports to show a correlation between sideline position and the likelihood of a flag. Is this proof of officiating bias?
Embed from Getty Images  Just two months into the job, new NFL Referees Association (NFLRA) Executive Director, Scott Green is speaking out on behalf of...
Rules modifications in effect for the 2017 Pro Bowl
The NFL officiating department uses the Senior Bowl as an opportunity to evaluate potential new officials.
The officials had a great conference championship round and got in some of the actions photos. Enjoy the galleries courtesy of Getty Images and team photographers....
NFL senior vice president of officiating Dean Blandino reviewed three calls from the Conference Championship games in his weekly officiating video
Football Zebras liveblog coverage of the AFC Championship between the Steelers and Patriots.
The Falcons were able to take advantage of a Packers fumble, with an unusual recovery at the goal line by cornerback Jalen Collins
Football Zebras liveblog coverage of the NFC Championship between the Packers and Falcons.
NFL senior vice president of officiating Dean Blandino released the weekly officiating video for the Divisional Playoffs.
Kansas City Chiefs tight end Travis Kelce has been fined for two separate occurrences both during and after Sunday's Divisional Playoff game.
Sources show conflicting information is coming from the league office over the Cowboys unusual substitution foul.
Football Zebras exclusive: Carl Cheffers is the referee for Super Bowl LI.
Jerome Boger has been selected as the referee for the 2017 NFL Pro Bowl at Orlando Citrus Bowl Stadium in Orlando, Florida.
Bill Vinovich will be the referee for the NFC Championship game and Terry McAulay will lead the crew in the AFC Championship.
The officials had a big weekend and get into the frame of many photos. Here are photos of the official in action courtesy of team photographers...